.load_couvercle{
      position: fixed;
      display: inline;
      background: rgba(0, 0, 0, 0.9);
      width: 100%;
      height: 100%;
      top: 0;
      left: 0;
      margin: 0;
      z-index: 3000;
  }

  .load_img{
      position: fixed;
      display: inline;
      background: rgba(0, 0, 0, 0.7);
      width: 100%;
      height: 100%;
      top: 0;
      left: 0;
      margin: 0;
      z-index: 3000;
  }

  .load_img #image-loading{
      position: absolute;
      width: 60px;
      height: 60px;
      top: 50%;
      left: 50%;
      margin-top: -57px;  /* Negative half of height. */
      margin-left: -30px;  /* Negative half of width. */
  }

  #text-loading{
      position: absolute;
      width: 200px;
      height: 26px;
      color: #fff;
      font-size: 20px;
      text-align: center;
      top: 50%;
      left: 50%;
      margin-top: 3px;  /* Negative half of height. */
      margin-left: -100px;  /* Negative half of width. */
      padding: 0;
  }

  .cRetour {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      line-height: 50px;
      font-size: 22px;
      text-align: center;
      color: #fff;
      padding-right: 9px;
      background: rgba(0, 0, 0, 0.5);
      z-index: 99998;
      transition: all ease-in 0.2s;
      position: fixed;
      cursor: pointer;
      bottom: 12px;
      right: 45%;
      display: none;
  }
  
  .cRetour:after{ 
      position: absolute;
      content: "\276F";
      transform: rotate(-90deg);
  }

  .cRetour:hover{
      background: rgba(0, 0, 0, 1);
      transition: all ease-in 0.2s;
  }